On theme with C2’s interchangeability, models D or E are essentially the same machine. When we talk about one we’re talking about both. The Concept 2 E is just 8 pounds heavier but is made out of stronger stuff all around — what’s plastic on the model D is aluminium on the model E, and what’s aluminum on the model D is welded steel on the model E. The only noticeable variations are seat height and display position.

If you are anything like me, you read the negative reviews to see what some of the complaints could potentially be...I have found none that match with my machine or experience so far. The boxes it came in were a little bunged-up but everything on the inside was perfect. Only took about 15-20 minutes to build (first time building a row machine) and another 5-10 to fill with water. We used it for a little while before we added the danish oil.

The frame is beyond durable and is designed for absorbing sound and vibration. There’s no creaking or other sounds that you might expect from wood components. It has a low center of gravity that keeps the rower in place while exerting full rowing power. The polycarbonate water tank is equally durable and practically indestructible. The Classic Rower doesn’t have any moving parts that can wear out, or belts and pulleys that need to be maintained.

I don't know how this machine compares to others. I have no idea. Here's what I know: I've had treadmills and elliptical machines, weight benches and several exercise appliances from infomercials. They all work exactly like they should if you use the equipment on a consistent basis. That's where the problem comes in. I would always give up eventually and the machine would sit in the corner, covered with my laundry, laughing at me. I bought this rower without ever even trying one at the gym because I was desperate to do something (and I voted for Frank Underwood). This was the one machine I was not only able to stick with, but I now eagerly look forward to using. It started a chain reaction that changed everything. You know those incredible before/after transformation pictures you see on weight loss shows? I'm one of those guys now. Rowing is like a 'secret' in the fitness world in the way there is so little emphasis. However, in terms of results, it is so much more efficient. It works your upper and lower body at the same time, huge cardio/fat burner and builds muscle like crazy. I'm glad I'm in on the secret too.

From a fitness perspective, the WaterRower Natural works 84 percent of your muscle mass, helping tone and strengthen your muscles while burning far more calories than most other aerobic machines. The exercise is also low impact, as it removes all the body weight from the ankles, knees, and hips, but still moves the limbs and joints through a full range of motion--from completely extended to completely contracted.